Peri-implant stress distribution in maxillary All-on-4 prosthesis fabricated on multi-unit angled abutment with cobalt chromium framework versus those with titanium framework: A 3D Finite Element Analysis
Tawfik, D., Naguib, A., Abdallah, M., Nada, M. (2024). Peri-implant stress distribution in maxillary All-on-4 prosthesis fabricated on multi-unit angled abutment with cobalt chromium framework versus those with titanium framework: A 3D Finite Element Analysis. EKB Journal Management System, 70(4), 3391-3398. doi: 10.21608/edj.2024.293793.3065
David Sami Tawfik; Amr Naguib; Mohamed Farouk Abdallah; Mohammad Abdelmonem Nada. "Peri-implant stress distribution in maxillary All-on-4 prosthesis fabricated on multi-unit angled abutment with cobalt chromium framework versus those with titanium framework: A 3D Finite Element Analysis". EKB Journal Management System, 70, 4, 2024, 3391-3398. doi: 10.21608/edj.2024.293793.3065
Tawfik, D., Naguib, A., Abdallah, M., Nada, M. (2024). 'Peri-implant stress distribution in maxillary All-on-4 prosthesis fabricated on multi-unit angled abutment with cobalt chromium framework versus those with titanium framework: A 3D Finite Element Analysis', EKB Journal Management System, 70(4), pp. 3391-3398. doi: 10.21608/edj.2024.293793.3065
Tawfik, D., Naguib, A., Abdallah, M., Nada, M. Peri-implant stress distribution in maxillary All-on-4 prosthesis fabricated on multi-unit angled abutment with cobalt chromium framework versus those with titanium framework: A 3D Finite Element Analysis. EKB Journal Management System, 2024; 70(4): 3391-3398. doi: 10.21608/edj.2024.293793.3065

Peri-implant stress distribution in maxillary All-on-4 prosthesis fabricated on multi-unit angled abutment with cobalt chromium framework versus those with titanium framework: A 3D Finite Element Analysis

Egyptian Dental Journal
Volume 70, Issue 4, October 2024, Page 3391-3398  XML PDF (1.03 MB)
Document Type: Original Article
DOI: 10.21608/edj.2024.293793.3065
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Authors
David Sami Tawfik email orcid 1; Amr Naguiborcid 2; Mohamed Farouk Abdallahorcid 3; Mohammad Abdelmonem Nadaorcid 4
1MSc, Master Candidate, Master Implantology, Faculty of Dentistry, Cairo University
2Lecturer, Department of Prosthodontics, Faculty of Dentistry, Cairo University, Egypt
3Professor, Department of Prosthodontics, Faculty of Dentistry, Cairo University; Professor, Department of Prosthodontics, Faculty of Dentistry, Galala University, Egypt
4Professor, Department of Prosthodontics, Faculty of Dentistry, Cairo University, Egypt
Abstract
Abstract
Aim: To use finite element analysis to evaluate the peri-implant stresses caused by the cobalt-chromium and titanium frameworks for maxillary all on four prostheses.
Material and methods: Three-dimensional finite elements modeling of an edentulous maxilla restored with a hybrid fixed prosthesis supported by four implants was done for this study. Anterior implants were placed vertically and bilaterally in the lateral-canine area. At the second premolar region, posterior implants were placed with a 17-degree distal angulation. Every implant featured a multi-unit abutment. The titanium framework for the first model was designed, and the cobalt-chromium framework for the second model was proposed.

Results: Von Mises stress, maximum stress, and directional deformation were assessed in the peri-implant bone area. Von Mises stresses on the screw-retained prosthesis were very similar in cobalt chromium and titanium frameworks compared to the underlying bone and implants.
Conclusion: For edentulous maxilla, the use of titanium or cobalt-chromium frameworks in conjunction with an all-on-four prosthesis is regarded as a dependable therapeutic alternative.
Keywords
Finite Element Analysis; Multi unit abutment; Framework Design; Von Misses stress; Maximum principal stress
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